HYBRID MEMORY CUBE SYSTEM INTERCONNECT DIRECTORY-BASED CACHE COHERENCE METHODOLOGY

摘要

A system includes a plurality of host processors and a plurality of hybrid memory cube (HMC) devices configured as a distributed shared memory for the host processors. An HMC device includes a plurality of integrated circuit memory die including at least a first memory die arranged on top of a second memory die, and at least a portion of the memory of the memory die is mapped to include at least a portion of a memory coherence directory; and a logic base die including at least one memory controller configured to manage three-dimensional (3D) access to memory of the plurality of memory die by at least one second device, and logic circuitry configured to implement a memory coherence protocol for data stored in the memory of the plurality of memory die.